Abstract: An electric parking brake actuator has an actuator device, a brake device and a cable-tension measuring device. The brake device has a cable and a tube assembly. The cable is mounted through the actuator device. The tube assembly is mounted around the cable and has a first tube, a second tube, a spring, a Hall IC and a magnet. The cable-tension measuring device has a first member and a second member which are mounted around the cable. The second member is capable of moving toward the first member relatively. The compressible spring is mounted between and abuts the first member and the second member. The Hall IC and the magnet are respectively mounted securely on the first member and the second member. The Hall IC is capable of measuring how much the spring is compressed to further measure the tension of the cable.

Abstract: A vehicle running control apparatus, which performs automatic running control by controlling an engine for applying a driving torque to a vehicle C and a brake device for applying a braking torque to the vehicle C such that a vehicle speed of the vehicle C becomes equal to a preset target vehicle speed, determines, on the basis of a target driving torque ETo calculated to apply the driving torque to the vehicle C and a target braking torque BTo calculated to apply the braking torque to the vehicle C, whether or not the vehicle C is running on a road difficult to run on, when automatic running control is performed. When it is determined that the vehicle C is running on the road difficult to run on, automatic running control is terminated.

Abstract: A motor-driven disk brake system is capable of preventing a pressing member from moving beyond a predetermined position at a time of stopping a motor. When a command for system termination is issued, motor current is reduced intermittently, which correspondingly reduces a motor displacement gradually such that a return force is spent gradually on a return displacement of a motor and a piston, thereby preventing a rotational speed of a rotor from increasing. A large accelerated backward movement of the motor and the piston beyond a predetermined position due to inertia is thereby prevented, because the return force does not act all at once during the return displacement of the motor and the piston. Accordingly, the piston is stopped near a standby position of non-braking state before system termination. As a result, a next activation of the motor-driven disk brake system can be conducted promptly.

Abstract: An electronic antiskid brake assembly with a portable power source that can retrofit onto a working manual brake system to provide antiskid capabilities without effecting the manual brake system's normal operation. The antiskid system can be applied anywhere on a brake linkage. When a force is applied to a brake pad, an electronic controller utilizes detects a skidding event, and then automatically powers on an actuator. The actuator moves a brake linkage to create a pulse mode on the brake linkage. The pulse mode modulates the force that is applied to the brake pad. A one way cylinder can be included with a manual hydraulic brake system to provide a mechanical means for generating pulse mode on the brake linkage. The power source can move with the brake linkage so that the actuator pulses the brake linkage a small amount, while the brake linkage applies full braking.

Abstract: A brake actuator for an electrical parking brake comprises an electric motor and a planetary gear set. The axes on which the planet wheels are carried on the planet carrier are joined substance-to-substance to the planet carrier, i.e. formed in one piece with it or for instance mounted on its surface by means of atomic or molecular forces. Recesses on the axes can receive a lubricant. Spacers between the planet carrier and planet wheels can reduce the contact surface in the axial direction.

Abstract: A device (20) has an electrically-operated brake (37) and a manually-operated auxiliary brake (27). The electrically-operated brake includes a coil (70), a core (68), an armature (69), and an alternating series of friction pads (74) and brake disks (75), that are arranged to be compressed between the housing and the armature. The shaft brake (27) includes a collar (22) mounted on the housing for combined axial and rotative movement relative thereto, a first interlock portion (106, 110) mounted on the shaft (24), an annular member (84) surrounding the shaft and having a second interlock portion (85) and a spring (124) urging the member to move toward the shaft. The collar (22) is adapted to be selectively moved relative to the housing between a first portion at which the first (106, 110) and second (85) interlock portions are physically engaged with one another, and a second position at which the first (106, 110) and second (85) interlock portions are physically separated from one another.

Abstract: A parking brake actuator system for an outdoor power equipment unit, such as a riding lawn mower, comprises a reversible electric motor that drives a gear reduction assembly. The gear reduction assembly rotates an output shaft at a speed slower than the speed of rotation of the motor. The output shaft has opposite ends that are linked by a pair of actuating rods to a pair of parking brakes. As the motor is rotated in reverse rotary directions, the connecting portions of the rods that are coupled to the parking brakes are moved in opposite, straight line directions to move the parking brakes between brake disengaged and brake engaged positions.

Abstract: A regenerative brake device for a vehicle includes a manual brake configured to apply a brake to a wheel of the vehicle by a manual operation of a brake lever; a motor configured to be coupled to a wheel of the vehicle, the motor being driven by a power from a battery, and also alternatively acting as a regenerative brake that charges the battery with an electromotive force of the motor; a brake sensor that detects a manual brake application point at which the manual brake is actuated from an operation amount of the brake lever; and a power control unit that performs regenerative power control for charging the battery with the electromotive force of the motor based on an output signal from the brake sensor so that the regenerative brake is generated in accordance with the operation amount of the brake lever.

Abstract: A railway brake cylinder includes a body (11?); a piston (13?) mobile relative to the body (11?) to act on a brake linkage and delimiting with the body (11?) a pressure chamber (10?) adapted to be supplied by a pneumatic pressure agent source; an auxiliary actuating member (26?) mobile relative to the body (11?) and the piston (13?), mechanically connected to manual operating elements to cause it to occupy either a rest position in which it is away from the piston (13?) or a pushing position in which it is in contact with the piston (13?); two orifices (73?, 51?) in fluid communication with the chamber (10?) and the atmosphere, respectively; and selective connecting elements (28?) between the two orifices (73?, 51?), the elements (28?) being mechanically connected to the auxiliary actuating member.

Abstract: An cable drive device (10) having a motor (M), a speed reducer (G), a nut member (26) connected to the speed reducer, a rod (32) screwed to the nut member (26) and guided by a guide member (34) so as not to rotate, a control cable (15) composed of an inner cable (45) connected to the rod and a guide tube (49) for guiding the inner cable, a sensor for detecting the amount of operation of the cable based on the amount of rotation of the speed reducer (G), and a load sensor (17) for detecting a load applied to the cable. An electric brake device can be obtained by connecting the control cable and a brake mechanism of the cable drive device (10).

Abstract: Brake equipment, for an elevator installation, includes: a static element; a movable element movable relative to the static element in a first degree of freedom, wherein selectably a first frictional contact is produced in a first contact surface between the static element and the movable element by a controllable normal force acting in a second degree of freedom, and a first friction force opposes movement of the movable element relative to the static element; and a relative element, wherein a second frictional contact is produced in a second contact surface between the movable element and the relative element by the normal force, and a second friction force opposes movement of the movable element relative to the relative element. The relative element is movable in the first degree of freedom relative to the static element between a normal position and a braking position and is resiliently biased into the normal position.

Abstract: The parking brake control device sets a lock control target tension TTAR to a value which depends on the brake fluid pressure (i.e. M/C pressure), wherein the lock control target tension TTAR is used as a threshold determining whether the condition for terminating a lock control is satisfied or not. This operation is aimed for compensating the decrease of the tension applied to the brake cable which occurs caused by the service brake when the service brake is operating and does not occur when the service brake is not operating. Therefore, it is possible to prevent the service brake from causing a problem in which the lock control is terminated while a desired brake force is not achieved at the EPB.

Abstract: An electronic parking brake apparatus may include a driving member coupled to and actuating a parking cable, a case in which the driving member is housed, a cable ferrule disposed outside the case and coupled to a portion of the parking cable therethrough, wherein the cable ferrule is biased toward the case by the parking cable when the driving member actuates the parking cable, and a sensing member interposed between the case and the cable ferrule and measuring tension of the parking cable.

Abstract: Disclosed is a disk brake for a vehicle having a power transmission device that presses a friction pad against a disk by using a worm gear. The disk brake includes a movable friction pad that makes contact with one lateral side of a disk rotating together with a vehicle wheel, thereby generating braking force, a wedge member, which is provided at one side thereof with the movable friction pad and moves toward the disk by means of a driving motor generating a driving force, a guide member for guiding the wedge member such that the wedge member moves back and force relative to the disk; and a power transmission device installed between the driving motor and the guide member so as to convert the driving force of the driving motor into a linear movement in a direction perpendicular to a rotating shaft of the driving motor.

Abstract: The invention relates to a method of powering at least one brushless DC electric motor having a plurality of phases for powering, the method including the steps of associating a static contactor with the motor for taking input voltage pulses and delivering polyphase voltage pulses to the motor in a manner that is servo-controlled to the angular position of the rotor of the motor, and for generating from a DC voltage source voltage pulses of frequency that is fixed and at a duty ratio that is controllable, thereby forming the input voltage pulses to the static contactor.

Abstract: Disclosed is a method for controlling a brake system (1) of a motor vehicle, which includes an electric generator (4) and a number of hydraulic, electronically controllable friction brakes (2) being allocated to axles of the motor vehicle, and the brake torque of which is composed of the brake torque of the generator (4) and the brake torque of the friction brakes (2), is intended to safeguard great brake comfort of the brake system (1). To this end, a number of friction brakes (2) are connected only when the total nominal brake torque exceeds the total actual brake torque by a selected maximum brake torque difference.

Abstract: An electromechanically actuable parking brake for motor vehicles is disclosed. The brake includes at least one electromechanical actuator whose rotational movement is converted into a translational movement by an actuating unit, and which moves at least one brake element in such a way that at least one brake lining which is connected to the brake element is pressed with a locking force against a rotor which is connected to a motor vehicle wheel, wherein the current consumption of electromechanical actuator when the parking brake is engaged and/or released can be acquired. Furthermore, a method for operating the electromechanically actuable parking brake is also disclosed.

Abstract: The invention relates to a ball screw for a motor vehicle brake, in particular for an electromechanically actuable motor vehicle brake, comprising a rotatable spindle; a nut that is axially movable relative to the spindle in accordance with the rotation thereof; and rolling body arrangement that is disposed between, and displaceable relative to, the spindle and the nut. In this ball screw it is provided that the rolling body arrangement is preloaded into a predetermined normal position by means of at least one spring element. The invention further relates to a vehicle brake having such a ball screw.

Abstract: A quiescent-current-actuated electromagnetic spring pressure brake including torque transmission sleeves disposed between a machine wall and the brake, and an axially movable armature plate having bores along its periphery to receive the torque transmission sleeves. At least one piston guide ring is provided in the area of torque transmission sleeves on the outer periphery of the latter adjacent an O-ring disposed in a groove, said piston guide ring being placed in the groove of said O-ring or in a separate groove and acting to provide a damping action in the circumferential direction and a sliding displacement of the armature plate in the axial direction.

Abstract: A wheel brake for an aircraft, the brake comprising a support (2) that receives at least one electromechanical actuator (1) fitted with a pusher (8) facing friction elements (3) and movable under drive from an electric motor (6) to apply a braking force selectively against the friction elements. The actuator is non-reversible such that a reaction force applied on the pusher cannot cause the electric motor to turn, and the actuator is associated with elements (30, 31, 32, 33, 34) for selectively switching off an electric power supply to the electric motor, which elements allow power to be delivered to the actuator in normal circumstances, and switch off the power if (a) the measured speed of rotation (wmes) of the electric motor drops below a first predetermined threshold (S1); and (b) the commanded speed of rotation ( ?) of the electric motor drops below a second predetermined threshold (S2).

Abstract: An apparatus for driving a roller of a printing press includes a main motor configured to drive the roller through a first gear wheel and a first freewheel, and an auxiliary motor configured to drive the roller through a second gear wheel and a second freewheel. A brake that is different from the main motor, for example a band brake, is configured to brake the roller during overrunning of the roller following a machine stop signal. A printing press having the apparatus is also provided.

Abstract: The translation apparatus comprises an elongate track, an elongate fixed member and a stage. The fixed member extends parallel to the track in a fixed lengthwise position relative to the track. The stage is mounted on the track and is capable of movement along the track. The stage comprises a motive force generator, a rotatable member and a rotary brake. The motive force generator is operable to move the stage along the track. The rotatable member is coupled with the fixed member in a manner that converts motion of the stage along the track into rotation of the rotatable member. The rotary brake is selectively operable to apply a braking torque to the rotatable member. The coupling between the rotatable member and the fixed member converts the braking torque applied to the rotatable member into a braking force applied to the stage.

Abstract: Presented is a method for actuating a parking brake for a vehicle wheel. The parking brake includes a drive, a force transmitting device, and a device for sensing an application force component of the parking brake. The method includes minimizing friction losses and ageing losses of the force transmitting device, and sensing the application force component of the parking brake by performing a force measurement directly on the drive. Also presented is a device for actuating a parking brake for a motor vehicle wheel. The device includes a drive, a force transmitting device, and a device for sensing an application force component of the parking brake. The device for sensing the application force component includes a device for minimizing the friction losses and ageing losses of the force transmitting device, and a device for measuring force directly on the drive.

Abstract: An electromagnetic safety trigger 46 includes a link 72 kinematically connected to a safety 70A, 70B of an elevator system mass, such as an elevator car or counterweight. An electromagnet 76 mounted on a linear actuator 74 is magnetically coupled to the link 72, and a spring 78 is connected between the link 72 and the elevator mass. The electromagnet 76 can be triggered to release the link 72, which allows the spring 78 to move the link 72 to engage the safety 70A, 70B.

Abstract: The braking device is provided a set of shape memory alloy activators positioned, in an agonistic-antagonistic configuration on each side of a brake lever. Braking and releasing phases are dictated by the austenitic transformation of the shape memory alloy activators. During brake activation, shrinking of the braking activator brings the friction pad in contact with a rotating drum creating a braking friction torque. Once the brake has been activated, deformation of a flexible fiberglass component prevents brake releasing by applying sufficient normal force between the drum and the friction pad. Conversely, upon heating of the releasing activator, the pad looses its grip and the drum is free to rotate.

Abstract: An actuator includes a screw mechanism (13) having a threaded nut (16) rotatable by an electric motor (11) about a longitudinal axis (x) and a screw (17) translatable along the axis between an axially extended position and an axially retracted position. The screw (17) is connectable to a wire (W) of a Bowden cable (C) having an outer sheath (S). The actuator has a casing (20) with a first, fixed transversal surface (18). A cup (50) is mounted axially slidably on the casing (20) and has a second transversal surface (51) adapted for resting against an end of the sheath (S). A spring (53) is compressed between the first, fixed transversal surface (18) and the sliding cup (50). The cup (50) is capable of reaching an axially extended position, corresponding to a released brake condition, and an axially retracted position towards the first fixed transversal surface (18), against the bias of the spring (53), corresponding to a brake actuated condition.

Abstract: Disclosed is an electric parking brake commonly used as a single puller type or a dual puller type. The electric parking brake includes an actuator housing; a parking cable connected to a brake that applies braking force to wheels of a vehicle; a motor generating driving force to operate the parking brake; a reduction gear unit for transferring power of the motor; a screw nut unit including a gear member connected to the gear reduction unit, a nut member connected to the gear member, and a screw member connected to a first parking cable of the parking cable while moving relative to the nut member; and a displacement sensor connected to the nut member of the screw nut unit. The displacement sensor includes a sensor housing, a magnet housing that moves relative to the sensor housing, a magnet elastic member elastically supported between the sensor housing and the magnet housing, a magnet provided in the magnet housing, and a hall IC provided in the sensor housing.

Abstract: There is provided an electric disk brake including a caliper and a lock mechanism wherein the lock mechanism shifts with a pad pressing member, and is composed of: a shifting member provided with a plurality of claws with a predetermined pitch in a shifting direction; an engaging member provided with an engaging portion which is engageable with the claws of the shifting member; an actuator driving the engaging member in a direction that the engaging portion engages with the claws of the shifting member; and an energizing means normally energizing the engaging member in a direction that the engaging portion is detached from the claws of the shifting member, and the engaging portion is engaged with the claws provided on one-side surface of the shifting member when being locked while the engaging portion is positioned on the other-side surface of the shifting member when being unlocked.

Abstract: According to an embodiment of the present invention, there is provided an EPB serving as an electrical parking brake in which a gear wheel and an external ring gear are arranged parallel to a driving gear rotating through a motor serving as the power source on a side surface, and fixed and output sun gears generating output torque are arranged to penetrate the external ring gear in a shaft direction via an internal ring gear and a planetary gear being in inner contact with the external ring gear, an overall length of a single body type housing with the motor is determined only by diameters of the driving gear, the gear wheel, and the external ring gear. Therefore, a power assembly converting the power of the motor driven by an ECU into the output torque is downsized so that a caliper mounted on a wheel presses a wheel disk.

Abstract: A vehicle brake system is provided with a brake ECU serving as controlled hydraulic brake force control for executing a controlled hydraulic brake force control to decrease the rotational speed of an electric motor when at least both of a regenerative brake force and a controlled hydraulic brake force are being applied. The brake ECU decreases the rotational speed of the electric motor when the gradient of a target controlled hydraulic brake force being a controlled hydraulic pressure command value given to a hydraulic brake device is downhill or is not present. Thus, the pressured fluid supplied from a pump driven by the electric motor to be supplied to wheel cylinders of a vehicle is decreased to enhance the efficiency in utilizing the regenerative energy which an electric motor for driving the vehicle has in dependence on the stepping state of a brake pedal.

Abstract: The invention relates to an electromechanical brake force booster for a hydraulic vehicle brake system. The invention proposes that the brake force booster be formed with two restoring springs, one of which acts on an electromechanical actuator and the other of which restoring springs acts on a pedal rod. In the event of failure of the electromechanical actuator, only the other spring, which preferably has a relatively low spring force, must be compressed using muscle force. The force loss in the event of actuation exclusively by muscle force is reduced.

Abstract: An apparatus and a system include an actuator assembly configured for controlling a movement of a manual mechanical linkage shaft in a manual brake system for a vehicle wheel. An electric motor drives the actuator assembly wherein a manually applied force to the manual mechanical linkage shaft is modulated or pulsed. A lock and release assembly is configured for engaging and disengaging the actuator assembly to and from the manual mechanical linkage shaft. Means actuates the lock and release assembly to engage the actuator assembly to the manual mechanical linkage shaft, and disengage the actuator assembly from the manual mechanical linkage shaft.

Abstract: In a vehicle parking system, when a selected shift position is changed between Park and a shift position other than Park, if both an electric motor of an electric parking lock mechanism and an electric motor of an electric parking brake mechanism are operated, these electric motors are started in such a manner that the times at which striking currents supplied to these electric motors reach their peaks are staggered.

Abstract: An eddy current magnetic braking system that is based on drag created when a conductor moves through a stationary magnetic field. As the magnetic field increases the drag value also increases. The invention provides a magnetic braking system for use on zip line/cable rides and trolleys. Alternate designs of the present invention include a magnetic braking system having a trolley that moves on a zip line/cable to a brake block which is connected to a pulley cable, as the trolley pushes the brake block, the pulley moves the conductor into a magnetic field creating an eddy current brake that slows the trolley to a stop.

Abstract: An improved structure for an electric actuator unit for use in a brake assembly.

Abstract: Brake apparatus includes a transmission unit for operatively connecting a brake pedal to a master cylinder, and the transmission unit is a mechanism capable of varying a ratio between an output amount of a push rod connected to a master cylinder and an operation amount of the brake pedal. Further, the transmission unit is constructed in such a manner that, in an initial operation region of the brake pedal, a ratio of the operation amount of the brake pedal to the output amount of the push rod is set to be greater than in another operation region immediately following the initial operation region.

Abstract: The invention provides a brake apparatus in which a vibration resistance and a heat resistance are improved, in a control apparatus of an integrally structured brake in which an electric circuit portion is attached to a brake force generating portion of the brake apparatus. In the control apparatus of the integrally structured brake in which the electric circuit portion is attached to the brake force generating portion of the brake apparatus, the structure is made such that an opening is provided in a circuit side case and a connected portion is arranged in a space within the opening, in order to secure an assured electric connection after attaching the circuit portion. A connecting work can be executed from the opening portion, a vibration resistance can be improved, and a heat resistance can be improved.

Abstract: A parking brake having an actuator, wherein the actuator is driven with a direct current motor which can be operated in two directions and which moves a piston of the actuator and, via a self-locking gear mechanism of the actuator, at least one brake shoe for applying or releasing the parking brake. A control unit for performing open-loop or closed-loop control of the movement of the direct current motor is also provided. During open-loop or closed-loop control of the movement of the direct current motor for applying and/or releasing the parking brake, the control unit takes into account a hydraulic admission pressure which is currently present at the piston if the brake is applied or was present at the piston if the brake has been released when it had previously been applied. A corresponding method for operating such a parking brake is also disclosed.

Abstract: Damping mechanisms and motor assemblies are provided. In an embodiment, by way of example only, a damping mechanism includes an end cap, a bearing retainer plate, a bearing damper ring, a bearing assembly, and first and second lateral dampers. The bearing damper ring is disposed in an annular cavity inwardly from an inner diameter surface of the end cap and has a radially inwardly-extending flange. The bearing assembly is disposed in the annular cavity radially inwardly relative to the bearing damper ring. The first lateral damper is disposed between a radially inwardly-extending wall of the end cap and the bearing damper ring. The second lateral damper is disposed between the bearing damper ring and the bearing retainer plate.

Abstract: An electromechanical actuator for press brakes, includes: an outer containment body (13); a lead nut (5) positioned within the outer body (13) and presenting a threaded internal surface (9); a stem (2) able to be associated to a bending tool and having a thread (4) operatively associated within the lead nut (5); motor element (6) positioned in the outer body (13) to set in rotation the lead nut (5) around its own longitudinal axis (X), the rotation of the lead nut (5) determining the axial displacement of the stem (2); and at least one tie rod (20) fastened within the containment body (13) to absorb the axial loads (C) applied on the stem (2); the axial loads (C) are transferred from the stem (2) to the tie rod (20) by transfer element (24).

Abstract: A multi-circuit electrohydraulic motor vehicle brake system includes a plurality of calipers having hydraulically actuated actuators which are hydraulically connected to an electronically controlled unit. The unit includes an electronic unit ECU and a hydraulic unit HCU. At least some of the calipers, additionally or separately include electromechanical actuators for actuating or releasing a parking brake effect. In order to cut down on electrical interfaces and electronic units in a motor vehicle, the electronic unit is connected to the electromechanical actuators via respective two separate electrical supply lines, and the electronic unit has at least one electrical switch for supplying the electromechanically actuated actuators with power.

Abstract: An aircraft brake system electromechanical actuator is provided. The actuator is configured with features that allow the electric motor to be a line replaceable unit. One such feature is a foreign-object-damage shield that inhibits dust, debris, and/or other particulate contaminants from entering the electromechanical actuator during electric motor removal and replacement.

Abstract: An electric disk brake that can be operated and inspected before being assembled and that can be assembled easily. A piston, a ball ramp mechanism, a differential reduction mechanism, and a pad wear compensation mechanism are integrated to form a piston unit. A motor, a resolver, and a drive controller are integrated to form a motor/controller unit. The piston unit is inserted into a cylinder of a caliper body, and the motor/controller unit is mounted on the caliper body to assemble an electric caliper. Before being incorporated into the electric caliper, the motor/controller unit can be operated and easily inspected for any defect by applying an electric current to the motor/controller unit.

Abstract: In a vehicle disk brake, a motor housing houses in a housing recess a case into which an end of an output shaft liquid-tightly protrudes, and is mounted to a caliper body. A reduction mechanism having an output rotating member is sealed in the case while part of the output rotating member fluid-tightly protrudes from the case so as to be coaxially and operatively connected to a rear portion of the screw shaft. Grease is charged into the case. Thus, the case for housing the reduction mechanism is simply configured while preventing leakage of the grease charged into the case, and mounting of the case to the caliper body is facilitated.

Abstract: During the standstill state maintenance control executed by an electric parking brake system, the moving force-based target tension Frefb is determined based on the inclination angle of a vehicle and the shift position each time the predetermined program is executed, and the tentative target tension Fref(n) in the current routine is set to a smaller value from among the moving force-based target tension Frefb and the maximum value Fmax. The control target tension Fref(n)* is set to a larger value from among the control target tension (the final target tension) Fref(n?1)* in the immediately preceding routine and the tentative target value Fref(n). Even if the tentative target tension Fref(n) is smaller than the control target tension Fref(n?1)*, the control target value Fref(n)* is not set to a value smaller than the control target tension Fref(n?1)*.

Abstract: Disclosed is a regenerative braking system capable of minimizing uncomfortable feeling during the braking operation while improving responsiveness and control performance by performing the braking operation using an electric motor. An electro-mechanical braking system is used when braking a rear wheel or front and rear wheels, so variable frictional braking is achieved, thereby maximizing the recovery rate of the regenerative energy.

Abstract: A motor-driven parking brake apparatus includes a load sensor (pressure sensor) for detecting axial load of a screw shaft. The pressure sensor includes a transmission member which receives the axial load via a circular surface of a plate, and a casing which accommodates the transmission member and receives the axial load via the transmission member. This casing has a circular opening having an opening area smaller than the surface of the circular surface. The pressure sensor detects a pressure generated due to a load received from an exposed portion of the transmission member which is exposed from the circular opening. Due to characteristics of the transmission member, the load received from the exposed portion is a portion of the axial load and proportional to the axial load.

Abstract: An input rod and an input piston are advanced in response to an operation of a brake pedal, and an electric motor is driven according to the movement of the input piston to propel a primary piston in a master cylinder through a ball-screw mechanism. Thus, a hydraulic pressure is generated and supplied to a brake caliper of each wheel. At this time, a part of the hydraulic pressure is received by the input piston, and a part of the reaction force of hydraulic pressure during braking is fed back to the brake pedal. A nut member of the ball-screw mechanism has a nut part with a ball groove and a rotor part thinner in wall thickness than the nut part. A rotor core of the electric motor is press-fitted to the rotor part, thereby making it difficult for stress produced in the rotor part by press fitting to be transmitted to the nut part, and maintaining the high dimensional accuracy of the ball groove on the nut part.

Abstract: The present invention provides an electric parking brake system with one cable that has only one cable between an actuator, serving as a power generator, and parking cables and high flexibility in laying-out for mounting to a vehicle. According to an electric parking brake system with one cable of the invention, an actuator that converts torque of a motor into axial moving force to operate parking cables is manufactured into a single module, a housing that defines the whole external shape of the actuator is formed into an integral unit by injection molding, in which vibration caused by rotation in the operation of the actuator is absorbed by elastic members, so that a small-sized actuator having improved workability in mounting can be obtained and desired performance, such as reduction of operational noise caused by absorption of vibration, can be achieved.

Abstract: Provided are a cable-driving apparatus that performs the function of an equalizer using a planet gear assembly, and a parking brake system using the cable-driving apparatus. The cable-driving apparatus includes a driving motor; a first planet gear assembly for reducing a rotational velocity of the driving motor; and a second planet gear assembly coupled to the first planet gear assembly, wherein a first parking brake cable is connected to a circumferential outer surface of a ring gear of the second planet gear assembly, and a second parking brake cable is connected to a circumferential outer surface of a carrier of the second planet gear assembly in an opposite direction to the first parking brake cable.